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earthangel456
21.10.2019 •
Mathematics
Work out the size of angle x you must include any working out. reason out the value of x
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Ответ:
This new angle 'y' is an exterior angle of the pentagon, and you can work out exterior angle of any shape by dividing 360 by the number of sides the shape has. So in this instance
y = 360 / 5 = 72 degrees.
As you know the sum of all angles in a triangle is 180 so:
x = 180 - 90 - 72
x = 18 degrees
Ответ:
what are the answers to choose from?